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README.md

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README.md

SHT40 & SGP40 - Environment 2 Click (Mikroe)

Summary

This project shows the implementation of Environment-sensor driver using SHT40 & SGP40 from Mikroe Integrated with EFR32xG24 Explorer Kit based on I2C communication.

Required Hardware

Hardware Connection

The Environment 2 Click board can just be "clicked" into its place. Be sure that the board's 45-degree corner matches the Explorer Kit's 45-degree white line. The board also has the I2C-bus pull-ups. Just be sure that the click board is configured into I2C-mode (the default) by the resistors and not into SPI-mode.

board

Setup

You can either create a project based on an example project or start with an empty example project.

Create a project based on an example project

  1. From the Launcher Home, add the BRD2703A to My Products, click on it, and click on the EXAMPLE PROJECTS & DEMOS tab. Find the example project with filter: 'sht40', 'sgp40'.

  2. Click Create button on the Third Party Hardware Drivers - SHT40 & SGP40 - Environment 2 Click (Mikroe) example. Example project creation dialog pops up -> click Create and Finish and Project should be generated. Create_example

  3. Build and flash this example to the board.

Start with an empty example project

  1. Create an "Empty C Project" for the "EFR32xG24 Explorer Kit Board" using Simplicity Studio v5. Use the default project settings.

  2. Copy the file app/example/mikroe_environment2_sht40_sgp40/app.c into the project root folder (overwriting existing file).

  3. Install the software components:

    • Open the .slcp file in the project.

    • Select the SOFTWARE COMPONENTS tab.

    • Install the following components:

      • [Services] → [Timers] → [Sleep Timer]
      • [Services] → [IO Stream] → [IO Stream: USART] → default instance name: vcom
      • [Application] → [Utility] → [Log]
      • [Third Party Hardware Drivers] → [Sensors] → [SHT40 & SGP40 - Environment 2 Click (Mikroe)]

  4. Install printf float

    • Open Properties of the project.

    • Select C/C++ Build → Settings → Tool Settings → GNU ARM C Linker → General. Check Printf float. float

  5. Build and flash this example to the board.

Note:

  • Make sure that the SDK extension already be installed. If not please follow this documentation.

  • SDK Extension must be enabled for the project to install "SHT40 & SGP40 - Environment 2 Click (Mikroe)" component.

How It Works

This is an example that demonstrates the use of the Environment 2 Click board. Measured and display air quality (raw data), temperature (degrees Celsius), relative humidity (%) and VOC Index. Results are being sent to the USART Terminal where you can track their changes. You can launch Console that's integrated into Simplicity Studio or use a third-party terminal tool like TeraTerm to receive the data from the USB. A screenshot of the console output is shown in the figure below.

usb_debug

Report Bugs & Get Support

To report bugs in the Application Examples projects, please create a new "Issue" in the "Issues" section of third_party_hw_drivers_extension repo. Please reference the board, project, and source files associated with the bug, and reference line numbers. If you are proposing a fix, also include information on the proposed fix. Since these examples are provided as-is, there is no guarantee that these examples will be updated to fix these issues.

Questions and comments related to these examples should be made by creating a new "Issue" in the "Issues" section of third_party_hw_drivers_extension repo.